Glu Mobile (GLUU) 10-Q 10 Aug 20 2020 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 04, 2020
Document And Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2020
Entity File Number	001-33368
Entity Registrant Name	Glu Mobile Inc
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	91-2143667
Entity Address, Address Line One	875 Howard Street, Suite 100
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103
City Area Code	415
Local Phone Number	800-6100
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	GLUU
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		170,853,481
Entity Central Index Key	0001366246
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 283,057	$ 127,053
Accounts receivable, net	64,658	29,304
Prepaid royalties	17,633	15,347
Deferred royalties	9,489	5,067
Deferred platform commission fees	43,619	29,239
Prepaid expenses and other assets	18,125	8,629
Total current assets	436,581	214,639
Property and equipment, net	17,779	17,643
Operating lease right of use assets	33,553	35,170
Long-term prepaid royalties	22,100	26,879
Other long-term assets	2,738	2,733
Intangible assets, net	2,983	4,758
Goodwill	116,227	116,227
Total assets	631,961	418,049
Current liabilities:
Accounts payable and accrued liabilities	27,331	17,535
Accrued compensation	15,752	11,260
Accrued royalties	15,987	20,802
Short-term operating lease liabilities	4,434	3,528
Deferred revenue	145,498	97,629
Total current liabilities	209,002	150,754
Long-term accrued royalties	20,783	26,842
Long-term operating lease liabilities	36,877	37,351
Other long-term liabilities	325	15
Total liabilities	266,987	214,962
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.0001 par value; 5,000 shares authorized at June 30, 2020 and December 31, 2019; no shares issued and outstanding at June 30, 2020 and December 31, 2019	0	0
Common stock, $0.0001 par value; 250,000 shares authorized at June 30, 2020 and December 31, 2019; 170,709 and 147,778 shares issued and outstanding at June 30, 2020 and December 31, 2019	17	15
Additional paid-in capital	813,468	634,721
Accumulated other comprehensive loss	(60)	(37)
Accumulated deficit	(448,451)	(431,612)
Total stockholders' equity	364,974	203,087
Total liabilities and stockholders' equity	$ 631,961	$ 418,049

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares shares in Thousands	Jun. 30, 2020	Dec. 31, 2019
CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited)
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	250,000	250,000
Common stock, shares issued	170,709	147,778
Common stock, shares outstanding	170,709	147,778

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited)
Revenue	$ 133,316	$ 95,540	$ 240,590	$ 191,425
Cost of revenue:
Platform commissions, royalties and other	46,727	32,806	83,701	66,076
Amortization of intangible assets	887	1,056	1,775	2,308
Total cost of revenue	47,614	33,862	85,476	68,384
Gross profit	85,702	61,678	155,114	123,041
Operating expenses:
Research and development	28,420	19,736	57,951	46,282
Sales and marketing	65,203	35,040	107,946	63,145
General and administrative	7,266	4,951	13,933	11,586
Total operating expenses	100,889	59,727	179,830	121,013
Income/(loss) from operations	(15,187)	1,951	(24,716)	2,028
Interest and other income, net	434	556	369	1,320
Income/(loss) before income taxes	(14,753)	2,507	(24,347)	3,348
Income tax benefit/(provision)	6,187	0	7,508	(178)
Net income/(loss)	$ (8,566)	$ 2,507	$ (16,839)	$ 3,170
Net income/(loss) per common share - basic	$ (0.05)	$ 0.02	$ (0.11)	$ 0.02
Net income/(loss) per common share - diluted	$ (0.05)	$ 0.02	$ (0.11)	$ 0.02
Weighted average common shares outstanding:
Basic	156,583	145,451	153,106	144,951
Diluted	156,583	159,682	153,106	159,556

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (Unaudited)
Net income/(loss)	$ (8,566)	$ 2,507	$ (16,839)	$ 3,170
Other comprehensive income/(loss):
Foreign currency translation adjustments		(30)	(23)	(15)
Other comprehensive income/(loss)		(30)	(23)	(15)
Comprehensive income/(loss)	$ (8,566)	$ 2,477	$ (16,862)	$ 3,155

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common stock	Additional Paid-In Capital	Accumulated other comprehensive income (loss)	Accumulated Deficit	Total
Beginning balance at Dec. 31, 2018	$ 14	$ 617,781	$ 1	$ (440,483)	$ 177,313
Beginning balances (in shares) at Dec. 31, 2018	143,870
Net income (loss)				663	663
Stock-based compensation expense		6,807			6,807
Issuance of common stock upon exercise of stock options		1,313			1,313
Issuance of common stock upon exercise of stock options (in shares)	468
Taxes paid related to net share settlement of equity awards	$ 1	(3,957)			(3,956)
Taxes paid related to net share settlement of equity awards (in shares)	560
Issuance of common stock pursuant to Employee Stock Purchase Plan		1,665			1,665
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)	278
Other comprehensive income (loss)			15		15
Ending balance at Mar. 31, 2019	$ 15	623,609	16	(439,820)	183,820
Ending balances (in shares) at Mar. 31, 2019	145,176
Beginning balance at Dec. 31, 2018	$ 14	617,781	1	(440,483)	177,313
Beginning balances (in shares) at Dec. 31, 2018	143,870
Net income (loss)					3,170
Other comprehensive income (loss)					(15)
Ending balance at Jun. 30, 2019	$ 15	623,652	(14)	(437,313)	186,340
Ending balances (in shares) at Jun. 30, 2019	145,784
Beginning balance at Mar. 31, 2019	$ 15	623,609	16	(439,820)	183,820
Beginning balances (in shares) at Mar. 31, 2019	145,176
Net income (loss)				2,507	2,507
Stock-based compensation expense		2,035			2,035
Issuance of common stock upon exercise of stock options		469			469
Issuance of common stock upon exercise of stock options (in shares)	209
Taxes paid related to net share settlement of equity awards		(2,461)			(2,461)
Taxes paid related to net share settlement of equity awards (in shares)	399
Other comprehensive income (loss)			(30)		(30)
Ending balance at Jun. 30, 2019	$ 15	623,652	(14)	(437,313)	186,340
Ending balances (in shares) at Jun. 30, 2019	145,784
Beginning balance at Dec. 31, 2019	$ 15	634,721	(37)	(431,612)	203,087
Beginning balances (in shares) at Dec. 31, 2019	147,778
Net income (loss)				(8,273)	(8,273)
Stock-based compensation expense		6,238			6,238
Issuance of common stock upon exercise of stock options		9,526			9,526
Issuance of common stock upon exercise of stock options (in shares)	2,921
Issuance of common stock upon exercise of warrants (in shares)	115
Taxes paid related to net share settlement of equity awards		(1,720)			(1,720)
Taxes paid related to net share settlement of equity awards (in shares)	320
Issuance of common stock pursuant to Employee Stock Purchase Plan		1,705			1,705
Issuance of common stock pursuant to Employee Stock Purchase Plan (in shares)	450
Other comprehensive income (loss)			(23)		(23)
Ending balance at Mar. 31, 2020	$ 15	650,470	(60)	(439,885)	210,540
Ending balances (in shares) at Mar. 31, 2020	151,584
Beginning balance at Dec. 31, 2019	$ 15	634,721	(37)	(431,612)	203,087
Beginning balances (in shares) at Dec. 31, 2019	147,778
Net income (loss)					(16,839)
Other comprehensive income (loss)					(23)
Ending balance at Jun. 30, 2020	$ 17	813,468	(60)	(448,451)	364,974
Ending balances (in shares) at Jun. 30, 2020	170,709
Beginning balance at Mar. 31, 2020	$ 15	650,470	(60)	(439,885)	210,540
Beginning balances (in shares) at Mar. 31, 2020	151,584
Net income (loss)				(8,566)	(8,566)
Stock-based compensation expense		7,620			7,620
Issuance of common stock upon exercise of stock options		5,347			5,347
Issuance of common stock upon exercise of stock options (in shares)	1,464
Taxes paid related to net share settlement of equity awards		(1,740)			(1,740)
Taxes paid related to net share settlement of equity awards (in shares)	411
Issuance of common stock upon follow-on public offering, net of issuance costs	$ 2	151,771			151,773
Issuance of common stock upon follow-on public offering, net of issuance costs (in shares)	17,250
Ending balance at Jun. 30, 2020	$ 17	$ 813,468	$ (60)	$ (448,451)	$ 364,974
Ending balances (in shares) at Jun. 30, 2020	170,709

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income/(loss)	$ (16,839)	$ 3,170
Adjustments to reconcile net income/(loss) to net cash used in operating activities:
Stock-based compensation	14,488	8,842
Depreciation	2,709	2,088
Non-cash lease expense	2,013	1,409
Amortization of intangible assets	1,775	2,308
Other non-cash adjustments	225	448
Changes in operating assets and liabilities:
Accounts receivable	(35,310)	(12,782)
Prepaid royalties	(6,562)	(578)
Deferred royalties	(4,422)	(475)
Deferred platform commission fees	(14,380)	(752)
Prepaid expenses and other assets	(9,599)	70
Accounts payable and other accrued liabilities	12,052	13,648
Accrued compensation	4,492	(10,367)
Accrued royalties	(1,962)	(1,760)
Deferred revenue	47,869	3,084
Other long-term liabilities	310	12
Operating lease liabilities	134	(1,476)
Net cash generated from/(used in) operating activities	(3,007)	6,889
Cash flows from investing activities:
Purchase of property and equipment	(5,733)	(2,127)
Other investing activities		(155)
Net cash used in investing activities	(5,733)	(2,282)
Cash flows from financing activities:
Proceeds from exercise of stock options and purchases under the ESPP	16,578	3,447
Proceeds from follow-on public offering, net of issuance costs	151,773
Taxes paid related to net share settlement of equity awards	(3,460)	(6,417)
Net cash provided by/(used in) financing activities	164,891	(2,970)
Effect of exchange rate changes on cash	(147)	(83)
Net increase in cash, cash equivalents and restricted cash	156,004	1,554
Cash, cash equivalents and restricted cash at beginning of period	127,053	97,944
Cash, cash equivalents at end of period	283,057	99,498
Reconciliation of cash, cash equivalents, and restricted cash to the condensed consolidated balance sheets
Cash, cash equivalents and restricted cash	$ 283,057	$ 99,498

The Company, Basis of Presentat

The Company, Basis of Presentation and Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2020
The Company, Basis of Presentation and Summary of Significant Accounting Policies
The Company, Basis of Presentation and Summary of Significant Accounting Policies	Note 1 — The Company, Basis of Presentation and Summary of Significant Accounting Policies ​ Glu Mobile Inc. (the “Company” or “Glu”) was incorporated in the state of Nevada in May 2001 and reincorporated in the state of Delaware in March 2007. The Company develops, publishes, and markets a portfolio of games designed for users of smartphones and tablet devices who download and make purchases within its games through direct-to-consumer digital storefronts, such as the Apple App Store, Google Play Store and others (“Digital Storefronts”). The Company creates games based on its own original brands, as well as third-party licensed brands, properties and other content . ​ Principles of Consolidation and Basis of Presentation ​ The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles in the United States (“GAAP”) for complete financial statements and should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 filed with the SEC on February 28, 2020. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, which the Company believes are necessary for a fair statement of the Company’s financial position as of June 30, 2020 and its condensed consolidated results of operations for the three and six months ended June 30, 2020 and 2019, respectively. These unaudited condensed consolidated financial statements are not necessarily indicative of the results to be expected for the entire year. The condensed consolidated balance sheet presented as of December 31, 2019 has been derived from the audited consolidated financial statements as of that date, and the condensed consolidated balance sheet presented as of June 30, 2020 has been derived from the unaudited condensed consolidated financial statements as of that date. Certain prior year balances have been reclassified to conform to the current year presentation. Such reclassifications did not materially affect revenue, operating income/(loss), net income/(loss), cash flows, total assets, total liabilities or stockholders’ equity. ​ The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated. ​ Use of Estimates ​ The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make judgments, assumptions and estimates that affect the amounts reported in its unaudited condensed consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on various other assumptions it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Estimates and assumptions reflected in the unaudited condensed consolidated financial statements include, but are not limited to, estimation of the average playing period of paying users associated with durable virtual items, the allowance for doubtful accounts, useful lives of property and equipment and intangible assets, valuation and realizability of deferred tax assets and uncertain tax positions, fair value of stock awards issued, fair value of warrants issued, accounting for business combinations, evaluating goodwill, long-lived assets for impairment, and realization of prepaid royalties and fair value of investments. Actual results may differ from these estimates due to risks and uncertainties, and these differences may be material, including uncertainty in the current economic environment due to the novel strain of coronavirus, SARS-CoV-2 (“COVID-19”) pandemic. Management will continue to actively monitor the impact of the COVID-19 pandemic on the Company’s assumptions and estimates. ​ Concentration of Credit Risk ​ Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents and accounts receivable. ​ The Company derives its accounts receivable from revenue earned from customers located worldwide. The Company performs ongoing credit evaluations of its customers’ financial condition and, generally, requires no collateral from its customers. The Company bases its allowance for doubtful accounts on management’s best estimate of the amount of probable credit losses in the Company’s existing accounts receivable. The Company writes off accounts receivable balances against the allowance when it determines that the amount will not be recovered. ​ The following table summarizes the revenue from customers in excess of 10% of the Company’s revenue: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ Six Months Ended ​ ​ ​ June 30, ​ ​ June 30, ​ ​ 2020 ​ 2019 ​ 2020 ​ 2019 Apple 55.5 % ​ 52.6 % ​ 56.4 % ​ 52.8 % Google 32.7 % ​ 34.6 % ​ 32.3 % ​ 34.4 % ​ At June 30, 2020, Apple Inc. (“Apple”) and Google Inc. (“Google”) accounted for 66.1% and 20.4%, respectively, of total accounts receivable. At December 31, 2019, Apple, Google, and Tapjoy Inc. (“Tapjoy”) accounted for 47.2%, 28.5%, and 17.8%, respectively, of total accounts receivable. No other customer or Digital Storefront represented more than 10% of the Company’s total accounts receivable as of these dates. ​ Recent Accounting Pronouncements ​ Recently Adopted Accounting Pronouncements ​ In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” , which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost and replaces the existing incurred loss impairment model with an expected loss methodology, which will result in earlier recognition of credit losses. The ASU requires a cumulative-effect adjustment to retained earnings transition approach and is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ Recently Issued Accounting Pronouncements Not Yet Adopted ​ In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes

Net Income_(Loss) Per Share

Net Income/(Loss) Per Share	6 Months Ended
	Jun. 30, 2020
Net Income/(Loss) Per Share
Net Income/(Loss) Per Share	Note 2 — Net Income/(Loss) Per Share ​ The Company computes basic net income/(loss) per share by dividing its net income/(loss) for the period by the weighted average number of common shares outstanding during the period. ​ Diluted net loss per share for the three and six months ended June 30, 2020 has been computed by dividing the net loss by the weighted-average number of common shares outstanding during the period, without consideration for common share equivalents as their effect would have been antidilutive. Diluted net income per share for the three and six months ended June 30, 2019 is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding during the period, including potentially dilutive common stock instruments. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2020 2019 ​ 2020 2019 Net income/(loss) ​ $ (8,566) ​ $ 2,507 ​ $ (16,839) ​ $ 3,170 ​ Shares used to compute net income/(loss) per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares used to compute basic net income/(loss) per share ​ ​ 156,583 ​ ​ 145,451 ​ ​ 153,106 ​ ​ 144,951 ​ Dilutive potential common shares ​ ​ — ​ ​ 14,231 ​ ​ — ​ ​ 14,605 ​ Weighted average shares used to compute diluted net income/(loss) per share ​ 156,583 ​ 159,682 ​ 153,106 ​ 159,556 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic net income/(loss) per share ​ $ (0.05) ​ $ 0.02 ​ $ (0.11) ​ $ 0.02 ​ Diluted net income/(loss) per share ​ $ (0.05) ​ $ 0.02 ​ $ (0.11) ​ $ 0.02 ​ ​ The following equity awards outstanding at the end of each period presented have been excluded from the computation of diluted net income/(loss) per share of common stock for the periods presented because including them would have had an anti-dilutive effect: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2020 2019 ​ 2020 ​ 2019 Warrants to purchase common stock ​ ​ 1,125 ​ ​ — ​ ​ 1,125 ​ ​ — ​ Options to purchase common stock ​ ​ 12,751 ​ ​ 579 ​ ​ 12,751 ​ ​ 579 ​ Restricted stock units ("RSUs") ​ ​ 5,889 ​ ​ 8 ​ ​ 5,889 ​ ​ 8 ​ Performance stock options ("PSOs") ​ ​ 2,800 ​ ​ 3,382 ​ ​ 2,800 ​ ​ 3,382 ​ Performance stock units ("PSUs") ​ ​ — ​ ​ 2,972 ​ ​ — ​ ​ 2,972 ​ Employee stock purchase plan ("ESPP") ​ ​ 358 ​ ​ — ​ ​ 358 ​ ​ — ​ Total ​ ​ 22,923 ​ ​ 6,941 ​ ​ 22,923 ​ ​ 6,941 ​ ​

Revenue from Contracts with Cus

Revenue from Contracts with Customers	6 Months Ended
	Jun. 30, 2020
Revenue from Contracts with Customers
Revenue from Contracts with Customers	Note 3 — Revenue from Contracts with Customers Disaggregation of Revenue ​ The following table summarizes revenue from contracts with customers for the three and six months ended June 30, 2020 and June 30, 2019: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2020 ​ 2019 ​ 2020 ​ 2019 ​ In-App Purchases (over-time revenue recognition) ​ $ 116,907 ​ $ 82,659 ​ $ 212,846 ​ $ 166,203 ​ Advertisements and offers (point-in-time revenue recognition) ​ 16,374 ​ 12,864 ​ ​ 27,703 ​ 25,194 ​ Other (point-in-time revenue recognition) ​ ​ 35 ​ ​ 17 ​ ​ 41 ​ ​ 28 ​ Total revenue ​ $ 133,316 ​ $ 95,540 ​ $ 240,590 ​ $ 191,425 ​ ​ The Company operates in a single reportable segment. In the table above, revenue is disaggregated by type of revenue stream, indicating whether it is recognized over-time or at a point-in-time. Contract Balances ​ The following table provides information about receivables and contract liabilities from contracts with customers: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 Receivables, which are included in accounts receivable, net $ 64,658 ​ $ 29,304 Contract liabilities, which are included in deferred revenue 145,498 ​ 97,629 ​ The Company receives payments from customers based on billing terms established in the Company’s contracts. Contract assets relate to the Company’s right to consideration for its completed performance under the contract before the customer pays consideration or before payment is due. At June 30, 2020 and December 31, 2019, there were no contract assets recorded in the Company’s condensed consolidated balance sheets. Accounts receivable are recorded when the right to consideration becomes unconditional. ​ Deferred revenue relates to payments received in advance of performance under the contract. Deferred revenue is recognized as revenue as the Company performs under the contract. The Company had $97,629 in deferred revenue as of December 31, 2019, of which $24,604 and $96,371 was recognized as revenue in the three and six months ended June 30, 2020, respectively. The Company had $85,736 in deferred revenue as of December 31, 2018, of which $21,914 and $84,612 was recognized as revenue in the three and six months ended June 30, 2019, respectively.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2020
Fair Value Measurements
Fair Value Measurements	Note 4 — Fair Value Measurements ​ Fair Value Measurements The Company accounts for fair value in accordance with Accounting Standard Codification 820, Fair Value Measurements and Disclosures Level 1 ​ Level 2 ​ Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. ​ The Company’s financial assets as of June 30, 2020 are presented below at fair value and were classified within the fair value hierarchy as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 June 30, 2020 Financial Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 283,057 ​ $ — ​ $ — ​ $ 283,057 ​ Other investments ​ ​ — ​ ​ — ​ ​ 1,565 ​ ​ 1,565 ​ Total financial assets ​ $ 283,057 ​ $ — ​ $ 1,565 ​ $ 284,622 ​ ​ The Company’s financial assets as of December 31, 2019 are presented below at fair value and were classified within the fair value hierarchy as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 December 31, 2019 Financial Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 127,053 ​ $ — ​ $ — ​ $ 127,053 Other investments ​ ​ — ​ ​ — ​ ​ 1,565 ​ ​ 1,565 Total financial assets ​ $ 127,053 ​ $ — ​ $ 1,565 ​ $ 128,618 ​ The Company’s cash and cash equivalents, which were held in operating bank and money market accounts, are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations or alternative pricing sources with reasonable levels of price transparency. The carrying value of accounts receivable and payables approximates fair value due to the short time to expected payment or receipt of cash. The carrying value of other investments approximates fair value, and there are no unrealized gains or losses, as there have been no events or changes in circumstances that would have had a significant effect on the fair value of these investments at June 30, 2020 and December 31, 2019.

Balance Sheet Components

Balance Sheet Components	6 Months Ended
	Jun. 30, 2020
Balance Sheet Components
Balance Sheet Components	Note 5 — Balance Sheet Components ​ Accounts Receivable, net ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, December 31, ​ 2020 2019 Accounts receivable ​ $ 64,658 ​ $ 29,304 ​ Less: Allowance for doubtful accounts ​ — ​ — ​ Accounts receivable, net ​ $ 64,658 ​ $ 29,304 ​ ​ Accounts receivable includes amounts billed and unbilled as of the respective balance sheet dates, but net of platform commissions paid to the Digital Storefronts. The Company had no bad debts during the three and six months ended June 30, 2020 and 2019.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets
Goodwill and Intangible Assets	Note 6 — Goodwill and Intangible Assets ​ Intangible Assets ​ The Company’s intangible assets were acquired primarily in various acquisitions as well as in connection with the purchase of certain trademarks, brand assets and licensed content. The carrying amounts and accumulated amortization expense of the acquired intangible assets at June 30, 2020 and December 31, 2019 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ Estimated Gross Accumulated Net Gross Accumulated Net ​ ​ Useful ​ Carrying ​ Amortization ​ Carrying ​ Carrying ​ Amortization ​ Carrying ​ ​ Life ​ Value ​ Expense ​ Value ​ Value ​ Expense ​ Value Intangible assets amortized to cost of revenue: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Titles, content and technology 3 - 5 yrs ​ $ 21,117 ​ $ (18,134) ​ $ 2,983 ​ $ 21,117 ​ $ (16,359) ​ $ 4,758 ​ Customer contracts and related relationships 5 yrs ​ 700 ​ ​ (700) ​ ​ — ​ 700 ​ ​ (700) ​ ​ — ​ Trademarks 7 yrs ​ 5,000 ​ ​ (5,000) ​ ​ — ​ 5,000 ​ ​ (5,000) ​ ​ — ​ ​ ​ ​ ​ $ 26,817 ​ $ (23,834) ​ $ 2,983 ​ $ 26,817 ​ $ (22,059) ​ $ 4,758 ​ ​ Acquisition-related intangibles included in the above table are finite-lived and are being amortized on a straight-line basis over their estimated useful lives, which approximate the pattern in which the economic benefits of the intangible assets are realized. The Company has included amortization of acquired intangible assets directly attributable to revenue-generating activities in cost of revenue. ​ During the three months ended June 30, 2020 and 2019, the Company recorded amortization expense in cost of revenue of $887 and $1,056, respectively. During the six months ended June 30, 2020 and 2019, the Company recorded amortization expense in cost of revenue of $1,775 and $2,308, respectively. ​ As of June 30, 2020, total expected future amortization related to intangible assets was as follows: ​ ​ ​ ​ ​ ​ Amortization ​ ​ to Be Included in ​ ​ Cost of Year Ending December 31, Revenue 2020 (remaining 6 months) ​ $ 1,483 2021 ​ 1,500 Total intangible assets ​ $ 2,983 ​ Goodwill ​ The Company had $116,227 in goodwill as of June 30, 2020 and December 31, 2019, respectively. There were no indicators of impairment as of June 30, 2020.

Leases

Leases	6 Months Ended
	Jun. 30, 2020
Leases
Leases	Note 7 – Leases ​ The Company currently leases real estate space under non-cancelable operating lease agreements for its corporate headquarters in San Francisco, California and its operations in Toronto, Canada, Hyderabad, India, Foster City, California, Burlingame, California and Orlando, Florida. These operating leases have remaining lease terms ranging from 5 months to 7.42 years, some of which include the option to extend ​ The Company does not include any of its renewal options when calculating its lease liability as the Company is not reasonably certain whether it will exercise these renewal options at this time. Rent expense for the three months ended June 30, 2020 and 2019 was $1,712 and $653, respectively. Rent expense for the six months ended June 30, 2020 and 2019 was $2,883 and $2,004, respectively. ​ ​ ​ ​ ​ ​ ​ ​ Operating Year Ending December 31, Leases 2020 (remaining 6 months) ​ 3,422 2021 ​ 7,104 2022 ​ ​ 7,015 2023 ​ ​ 6,980 2024 and thereafter ​ ​ 27,667 Total lease payments ​ $ 52,188 Less: imputed interest ​ ​ (10,877) Total ​ $ 41,311 ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ Weighted average remaining lease term ​ 7.06 yrs Weighted average discount rate ​ 6.7 % ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended ​ June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: ​ ​ ​ Operating cash outflow from operating leases ​ $ 1,320 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ June 30, 2020 June 30, 2020 Right of use assets obtained in exchange for new lease obligations: ​ ​ ​ ​ ​ Operating leases ​ $ 73 $ 407 ​ ​

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies
Commitments and Contingencies	Note 8 — Commitments and Contingencies ​ Minimum Guaranteed Royalties and Developer Commitments ​ The Company has entered into license and publishing agreements with various celebrities, athletes, sports and entertainment organizations, and other well-known brands and properties ​ At June 30, 2020, future unpaid minimum guaranteed royalty commitments were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Future ​ ​ Minimum ​ ​ Guarantee Year Ending December 31, Commitments 2020 (remaining 6 months) ​ $ 2,660 2021 ​ 10,829 2022 ​ ​ 6,855 2023 ​ ​ 6,690 2024 ​ ​ 6,150 ​ ​ $ 33,184 ​ The amounts represented in the table above reflect the Company’s minimum cash obligations for the respective calendar years, but do not necessarily represent the periods in which they will be expensed in the Company’s unaudited condensed consolidated financial statements. ​ Licensor commitments include $31,238 of commitments due to licensors that have been recorded in current and long-term liabilities and a corresponding amount in current and long-term assets because payment is not contingent upon performance by the licensor. The classification of commitments between long-term and short-term is determined based on the timing of expected recoupment of earned royalties calculated on projected revenue for the licensed intellectual property games. ​ Indemnification Arrangements ​ The Company has entered into agreements under which it indemnifies each of its officers and directors during his or her lifetime for certain events or occurrences while the officer or director is or was serving at the Company’s request in that capacity. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has a director and officer insurance policy that limits its exposure and enables the Company to recover a portion of any future amounts paid. ​ In the ordinary course of its business, the Company includes standard indemnification provisions in most of its commercial agreements with Digital Storefronts and licensors. Pursuant to these provisions, the Company generally indemnifies these parties for losses suffered or incurred in connection with its games, including as a result of intellectual property infringement, viruses, worms and other malicious software, and legal or regulatory violations. The term of these indemnity provisions is generally perpetual after execution of the corresponding license agreement, and the maximum potential amount of future payments the Company could be required to make under these provisions is often unlimited. To date, the Company has not incurred costs to defend lawsuits or settle indemnified claims of these types and, accordingly, has ​ Contingencies ​ From time to time, the Company is subject to various claims, complaints and legal actions in the normal course of business. The Company assesses its potential liability by analyzing specific litigation and regulatory matters using available information. The Company’s estimate of losses is developed in consultation with inside and outside counsel, which involves a subjective analysis of potential results and outcomes, assuming various combinations of appropriate litigation and settlement strategies. After taking all of the above factors into account, the Company determines whether an estimated loss from a contingency should be accrued by assessing whether a loss is deemed reasonably probable and the amount can be reasonably estimated. The Company further determines whether an estimated loss from a contingency should be disclosed by assessing whether a material loss is deemed reasonably possible. Such disclosure will include an estimate of the additional loss or range of loss or will state that an estimate cannot be made. The Company does not believe it is party to any currently pending litigation, the outcome of which is reasonably possible to have a material adverse effect on its operations, financial position or liquidity. However, the ultimate outcome of any litigation is uncertain and, regardless of outcome, litigation can have an adverse impact on the Company because of defense costs, potential negative publicity, diversion of management resources and other factors.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2020
Stockholders' Equity
Stockholders' Equity	Note 9 — Stockholders’ Equity ​ Warrants to Purchase Common Stock ​ Warrants outstanding at June 30, 2020 were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number ​ Weighted ​ ​ ​ ​ ​ of Shares ​ Average ​ ​ ​ ​ ​ Outstanding ​ Exercise ​ Average ​ ​ ​ Under ​ Price per ​ Contractual ​ ​ ​ Warrant Share Term (Years) Warrants outstanding, December 31, 2019 ​ 1,600 ​ $ 4.61 ​ 5.44 ​ Exercised ​ (475) ​ $ 4.99 ​ 5.00 ​ Warrants outstanding, June 30, 2020 ​ 1,125 ​ $ 4.46 ​ 5.44 ​ ​ No expenses with respect to these warrants were recognized during the three and six months ended June 30, 2020 and 2019. ​ Follow-on Public Offering ​ In June 2020, the Company completed a follow-on public offering of 17,250 shares of its common stock, which included an over-allotment option to purchase an additional 2,250 shares, at a public offering price of $9.25 per share (the “Offering”). The aggregate gross proceeds from the Offering, including the exercise of the over-allotment, were approximately $159,563, and net proceeds received after underwriting fees and offering expenses totalled approximately $151,773. The Company does not have specific uses of the net proceeds from the Offering but intends to use the net proceeds for working capital and other general corporate purposes, which may include potential acquisitions and strategic transactions.

Stock Incentive Plans

Stock Incentive Plans	6 Months Ended
	Jun. 30, 2020
Stock Incentive Plans
Stock Incentive Plans	Note 10 — Stock Incentive Plans ​ 2007 Equity Incentive Plan ​ In April 2020, the Company’s Board of Directors approved, and in June 2020, the Company’s stockholders approved, the sixth Amended and Restated 2007 Equity Incentive Plan (the “Sixth Amended 2007 Plan”). The Sixth Amended 2007 Plan included an increase of 7,000 shares in the aggregate number of shares of common stock authorized for issuance under the plan. ​ Performance-based equity awards ​ The Compensation Committee of the Company’s Board of Directors (the “Compensation Committee”) has awarded PSOs and/or PSUs to the Company’s executives and certain other employees. These performance-based awards are subject to the achievement of specified annual performance goals. They become eligible to vest only if the applicable performance goals are achieved and will vest only if the grantee remains employed with the Company through each applicable vesting date. The number of shares that may vest depend on the extent to which the Company achieves the specified annual performance goals. The fair value of these awards is estimated on the date of grant. The PSOs have a contractual term of 10 years. If the performance goals are not met as of the end of the performance period, no compensation expense is recognized, and any previously recognized expense is reversed. The expected cost is based on the awards that are probable to vest and is recognized over the service period. ​ 2007 Employee Stock Purchase Plan ​ In April 2017, the Company’s Board of Directors approved, and in June 2017, the Company’s stockholders approved, the Amended and Restated 2007 Employee Stock Purchase Plan (the “Amended 2007 Purchase Plan”). The Amended 2007 Purchase Plan included an increase of 4,000 shares in the aggregate number of shares of common stock authorized for issuance under the plan and removal of the expiration date of the plan. ​ 2018 Equity Inducement Plan In April 2018, the Compensation Committee of the Company’s Board of Directors adopted the 2018 Equity Inducement Plan (the “2018 Plan”). The 2018 Plan replaced the Company’s 2008 Equity Inducement Plan that expired by its terms in March 2018, and is intended to augment the shares available for issuance under the Fourth Amended 2007 Plan. The Company did not seek stockholder approval for the 2018 Plan. As such, awards under the Inducement Plan will be granted in accordance with Nasdaq Listing Rule 5635(c)(4) and only to persons not previously considered an employee or director of the Company, or following a bona fide period of non-employment, as an inducement material to such individuals entering into employment with the Company. The Company initially reserved 400 shares of common stock for issuance under the 2018 Plan. ​ RSU Activity ​ A summary of the Company’s RSU activity for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Number of ​ Average ​ Average Remaining ​ ​ Aggregate ​ ​ Units ​ Grant Date ​ Contractual ​ ​ Intrinsic ​ Outstanding Fair Value ​ Term (Years) ​ ​ Value Awarded and unvested, December 31, 2019 3,951 ​ $ 5.66 ​ ​ ​ ​ ​ Granted 3,013 ​ $ 6.40 ​ ​ ​ ​ ​ Vested (885) ​ $ 4.88 ​ ​ ​ ​ ​ Forfeited (190) ​ $ 5.78 ​ ​ ​ ​ ​ Awarded and unvested, June 30, 2020 5,889 ​ $ 6.15 ​ 1.73 ​ $ 54,592 ​ PSU Activity ​ A summary of the Company’s PSU activity for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Number of ​ Average ​ Average Remaining ​ ​ Aggregate ​ ​ Units ​ Grant Date ​ Contractual ​ ​ Intrinsic ​ Outstanding Fair Value ​ Term (Years) ​ ​ Value Awarded and unvested, December 31, 2019 ​ 5,417 ​ $ 6.06 ​ ​ ​ ​ ​ Vested ​ (276) ​ $ 3.61 ​ ​ ​ ​ ​ Forfeited ​ (1,370) ​ $ 6.85 ​ ​ ​ ​ ​ Awarded and unvested, June 30, 2020 ​ 3,771 ​ $ 5.95 ​ 1.24 ​ $ 34,953 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ PSUs expected to vest at June 30, 2020 ​ 1,625 ​ $ 5.56 ​ 0.63 ​ $ 15,068 ​ PSO Activity ​ A summary of the Company’s PSO activity for the six months ended June 30, 2020 is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Number of ​ Average ​ Average Remaining ​ ​ Aggregate ​ ​ Shares ​ Exercise ​ Contractual ​ ​ Intrinsic ​ Outstanding Price ​ Term (Years) ​ ​ Value Balance as of December 31, 2019 ​ 6,583 ​ $ 4.54 ​ ​ ​ ​ ​ Canceled ​ (1,377) ​ $ 6.18 ​ ​ ​ ​ ​ Exercised ​ (948) ​ $ 3.61 ​ ​ ​ ​ ​ Balance as of June 30, 2020 ​ 4,258 ​ $ 4.21 ​ 7.53 ​ $ 21,531 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ PSOs expected to vest at June 30, 2020 ​ 526 ​ $ 3.60 ​ 7.35 ​ $ 2,984 PSOs exercisable at June 30, 2020 ​ 2,800 ​ $ 3.59 ​ 7.30 ​ $ 15,892 ​ Stock Option Activity ​ The following table summarizes the Company’s stock option activity for the six months ended June 30, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options Outstanding ​ ​ ​ ​ ​ ​ ​ Weighted Weighted ​ ​ ​ ​ Number ​ Average ​ Average Remaining ​ Aggregate ​ ​ of ​ Exercise ​ Contractual ​ Intrinsic ​ ​ Shares ​ Price ​ Term (Years) ​ Value Balances at December 31, 2019 16,288 $ 3.56 ​ ​ ​ ​ ​ Options granted 210 ​ $ 9.00 ​ ​ ​ ​ ​ ​ Options canceled (287) ​ $ 5.35 ​ ​ ​ ​ ​ ​ Options exercised (3,460) ​ $ 3.36 ​ ​ ​ ​ ​ ​ Balances at June 30, 2020 12,751 ​ $ 3.66 6.98 ​ $ 71,487 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options exercisable at June 30, 2020 8,619 ​ $ 3.28 6.71 ​ $ 51,668 ​ ​ The aggregate intrinsic value in the preceding table is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of the Company’s common stock on The Nasdaq Global Select Market of $9.27 per share as of June 30, 2020 (the last trading day in the quarter). Cash proceeds, net of taxes, from option exercises were $14,873 and $860 during the six months ended June 30, 2020 and 2019, respectively. ​ Stock-Based Compensation ​ The cost of RSUs and PSUs are determined using the fair value of the Company’s common stock based on the quoted closing price of the Company’s common stock on the date of grant. RSUs typically vest and are settled over approximately a four-year period with 25% of the shares vesting on or around the one-year anniversary of the grant date and the remaining shares vesting quarterly thereafter. Compensation cost for stock options, RSUs and performance-based awards with a single vesting date is amortized ratably over the requisite service period. For performance-based awards that have multiple vesting dates, the compensation cost is recognized ratably over the requisite service period for each tranche, whereby each vesting tranche is treated as a separate award for determining the requisite service period. The compensation cost for performance-based awards may be adjusted over the vesting period based on interim estimates of performance against the pre-set financial performance measures. ​ Under Accounting Standard Codification 718, Compensation-Stock Compensation ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ 2020 ​ 2019 ​ 2020 ​ 2019 Dividend yield — % — % — % — % Risk-free interest rate 0.28 % 2.07 % 0.28 % 2.15 % Expected volatility 69.3 % 56.1 % 69.3 % 56.1 % Expected term (years) 4.00 ​ 4.00 ​ 4.00 ​ 4.00 ​ ​ The expected term of stock options gave consideration to early exercises, post-vesting cancellations and the options’ contractual term ranging from 6 to 10 years. The Company based its expected volatility on its own historical volatility. The Company did not grant any PSOs during the three and six months ended June 30, 2020 and 2019. The weighted-average fair value of stock options granted during the three and six months ended June 30, 2020 was $4.63 per share. The weighted-average fair value of stock options granted during the three and six months ended June 30, 2019 was $3.88 and $3.94 per share, respectively. ​ The following table summarizes the consolidated stock-based compensation expense by line items in the condensed consolidated statement of operations: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2020 2019 ​ 2020 2019 ​ Research and development ​ $ 5,298 ​ $ 1,128 ​ $ 9,260 ​ $ 5,074 ​ Sales and marketing ​ 1,013 ​ 55 ​ 1,888 ​ 881 ​ General and administrative ​ 1,795 ​ 852 ​ 3,340 ​ 2,887 ​ Total stock-based compensation expense ​ $ 8,106 ​ $ 2,035 ​ $ 14,488 ​ $ 8,842 ​ (1) For the three and six months ended June 30, 2020, stock-based compensation expense recorded in research and development includes $486 and $630 from PSUs classified as liabilities. (2) Stock-based compensation expense for the three and six months ended June 30, 2019 included a reversal of previously accrued expense of $2,526 due to a decrease in the vesting probability of certain performance-based equity awards. ​ The following table summarizes total compensation expense related to unvested awards not yet recognized as of June 30, 2020: ​ ​ ​ ​ ​ ​ Unrecognized Compensation ​ ​ Expense for Unvested ​ ​ Awards Stock options ​ $ 8,276 RSUs ​ ​ 33,063 PSUs ​ ​ 7,048 PSOs ​ ​ 638 Total unrecognized compensation expense ​ $ 49,025 (1) The unrecognized compensation expense for PSUs classified as equity and vesting in fiscal years 2022 and 2023, except for PSUs classified as liabilities, is excluded in the table above as the Company does not have a reasonable basis upon which to estimate the vesting probability of such awards in those future periods. ​ The unrecognized compensation expense related to stock options and RSUs will be recognized over a weighted average period of 1.47 years and 3.30 years, respectively. The unrecognized compensation expense related to PSOs and PSUs, except for performance awards classified as equity and vesting in fiscal years 2022 and 2023, will be recognized over a weighted average period of 0.63 years.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2020
Income Taxes
Income Taxes	Note 11 – Income Taxes ​ The Company recorded an income tax benefit of $6,187 and $7,508 for the three and six months ended June 30, 2020, respectively, and an income tax expense of $0 and $178 for the three and six months ended June 30, 2019, respectively . ​ The Company accounts for uncertain tax positions in accordance with Accounting Standards Codification 740, Income Taxes (“ASC 740”). As of June 30, 2020, and December 31, 2019, the total amount of unrecognized tax benefits was $16,440 and $15,084 , respectively. These unrecognized tax benefits are currently included in the Company’s deferred tax assets, which are subject to full valuation allowance. As such, these unrecognized tax benefits, if recognized, would not have an impact on the Company’s effective tax rate. ​ The Company is subject to taxation in the United States and various foreign jurisdictions. The material jurisdictions subject to examination by tax authorities are primarily the State of California, United States, Canada, and India. The Company’s federal tax returns are open by statute for tax years 1998 and forward and California tax returns are open by statute for tax years 2003 and forward and could be subject to examination by the tax authorities. The Company’s income tax returns in its international locations are open by statute for tax years 2012 and forward. The Company does not provide for federal income taxes on the undistributed earnings of its foreign subsidiaries as such earnings are to be reinvested indefinitely outside the U.S.

Segment Information and Operati

Segment Information and Operations by Geographic Area	6 Months Ended
	Jun. 30, 2020
Segment Information and Operations by Geographic Area
Segment Information and Operations by Geographic Area	Note 12 — Segment Information and Operations by Geographic Area ​ Operating segments are defined as components of an enterprise for which separate financial information is available that is evaluated regularly by the chief operating decision-maker (“CODM”), or decision making group, whose function is to allocate resources to and assess the performance of the operating segments. The Company has identified its Chief Executive Officer as the CODM. The Company operates in a single operating segment. The financial information reviewed by the CODM is included within one operating segment for purposes of allocating resources and evaluating financial performance. ​ The following tables set forth revenue and long-lived assets based on geography: ​ Revenue ​ Revenue by geography is primarily based on the geographic location of the Company’s payers. International revenue is revenue generated from distributors and advertising service providers whose principal operations are located outside the United States or, in the case of the Digital Storefronts, the revenue generated from end-user purchases made outside of the United States. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2020 2019 ​ 2020 2019 ​ United States of America ​ $ 104,377 ​ $ 73,835 ​ $ 188,385 ​ $ 146,703 ​ Americas, excluding the United States ​ 7,827 ​ 5,979 ​ 14,447 ​ 12,197 ​ EMEA ​ 14,715 ​ 10,902 ​ 26,573 ​ 22,430 ​ APAC ​ 6,397 ​ 4,824 ​ 11,185 ​ 10,095 ​ Total revenue ​ $ 133,316 ​ $ 95,540 ​ $ 240,590 ​ $ 191,425 ​ ​ Long-Lived Assets ​ The Company attributes its long-lived assets, which primarily consist of property and equipment, to a country primarily based on the physical location of the assets. Property and equipment, net of accumulated depreciation and amortization, summarized by geographic location was as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, December 31, ​ 2020 2019 United States of America ​ $ 16,812 ​ $ 16,738 ​ Rest of the World ​ 967 ​ 905 ​ Total ​ $ 17,779 ​ $ 17,643 ​ ​

The Company, Basis of Present_2

The Company, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2020
The Company, Basis of Presentation and Summary of Significant Accounting Policies
Principles of Consolidation and Basis of Presentation	Principles of Consolidation and Basis of Presentation ​ The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles in the United States (“GAAP”) for complete financial statements and should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 filed with the SEC on February 28, 2020. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting only of normal recurring adjustments, which the Company believes are necessary for a fair statement of the Company’s financial position as of June 30, 2020 and its condensed consolidated results of operations for the three and six months ended June 30, 2020 and 2019, respectively. These unaudited condensed consolidated financial statements are not necessarily indicative of the results to be expected for the entire year. The condensed consolidated balance sheet presented as of December 31, 2019 has been derived from the audited consolidated financial statements as of that date, and the condensed consolidated balance sheet presented as of June 30, 2020 has been derived from the unaudited condensed consolidated financial statements as of that date. Certain prior year balances have been reclassified to conform to the current year presentation. Such reclassifications did not materially affect revenue, operating income/(loss), net income/(loss), cash flows, total assets, total liabilities or stockholders’ equity. ​ The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated.
Use of Estimates	Use of Estimates ​ The preparation of financial statements in conformity with U.S. GAAP requires the Company’s management to make judgments, assumptions and estimates that affect the amounts reported in its unaudited condensed consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on various other assumptions it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Estimates and assumptions reflected in the unaudited condensed consolidated financial statements include, but are not limited to, estimation of the average playing period of paying users associated with durable virtual items, the allowance for doubtful accounts, useful lives of property and equipment and intangible assets, valuation and realizability of deferred tax assets and uncertain tax positions, fair value of stock awards issued, fair value of warrants issued, accounting for business combinations, evaluating goodwill, long-lived assets for impairment, and realization of prepaid royalties and fair value of investments. Actual results may differ from these estimates due to risks and uncertainties, and these differences may be material, including uncertainty in the current economic environment due to the novel strain of coronavirus, SARS-CoV-2 (“COVID-19”) pandemic. Management will continue to actively monitor the impact of the COVID-19 pandemic on the Company’s assumptions and estimates.
Concentration of Credit Risk	Concentration of Credit Risk ​ Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents and accounts receivable. ​ The Company derives its accounts receivable from revenue earned from customers located worldwide. The Company performs ongoing credit evaluations of its customers’ financial condition and, generally, requires no collateral from its customers. The Company bases its allowance for doubtful accounts on management’s best estimate of the amount of probable credit losses in the Company’s existing accounts receivable. The Company writes off accounts receivable balances against the allowance when it determines that the amount will not be recovered. ​ The following table summarizes the revenue from customers in excess of 10% of the Company’s revenue: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ Six Months Ended ​ ​ ​ June 30, ​ ​ June 30, ​ ​ 2020 ​ 2019 ​ 2020 ​ 2019 Apple 55.5 % ​ 52.6 % ​ 56.4 % ​ 52.8 % Google 32.7 % ​ 34.6 % ​ 32.3 % ​ 34.4 % ​ At June 30, 2020, Apple Inc. (“Apple”) and Google Inc. (“Google”) accounted for 66.1% and 20.4%, respectively, of total accounts receivable. At December 31, 2019, Apple, Google, and Tapjoy Inc. (“Tapjoy”) accounted for 47.2%, 28.5%, and 17.8%, respectively, of total accounts receivable. No other customer or Digital Storefront represented more than 10% of the Company’s total accounts receivable as of these dates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements ​ Recently Adopted Accounting Pronouncements ​ In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2016-13, “Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” , which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost and replaces the existing incurred loss impairment model with an expected loss methodology, which will result in earlier recognition of credit losses. The ASU requires a cumulative-effect adjustment to retained earnings transition approach and is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ In January 2017, the FASB issued ASU No. 2017-04, Intangibles—Goodwill and Other (Topic 350) Simplifying the Test for Goodwill Impairment The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework – Changes to the Disclosure Requirements for Fair Value Measurement. The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ In August 2018, the FASB issued ASU 2018-15, Intangibles – Goodwill and Other – Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract The adoption of this standard did not have a material impact on the Company’s unaudited condensed consolidated financial statements. ​ Recently Issued Accounting Pronouncements Not Yet Adopted ​ In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes

The Company, Basis of Present_3

The Company, Basis of Presentation and Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2020
The Company, Basis of Presentation and Summary of Significant Accounting Policies
Schedule of Revenue Concentration	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ Six Months Ended ​ ​ ​ June 30, ​ ​ June 30, ​ ​ 2020 ​ 2019 ​ 2020 ​ 2019 Apple 55.5 % ​ 52.6 % ​ 56.4 % ​ 52.8 % Google 32.7 % ​ 34.6 % ​ 32.3 % ​ 34.4 %

Net Income_(Loss) Per Share (Ta

Net Income/(Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2020
Net Income/(Loss) Per Share
Computation of Net Income/(Loss) Per Share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2020 2019 ​ 2020 2019 Net income/(loss) ​ $ (8,566) ​ $ 2,507 ​ $ (16,839) ​ $ 3,170 ​ Shares used to compute net income/(loss) per share: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted average shares used to compute basic net income/(loss) per share ​ ​ 156,583 ​ ​ 145,451 ​ ​ 153,106 ​ ​ 144,951 ​ Dilutive potential common shares ​ ​ — ​ ​ 14,231 ​ ​ — ​ ​ 14,605 ​ Weighted average shares used to compute diluted net income/(loss) per share ​ 156,583 ​ 159,682 ​ 153,106 ​ 159,556 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic net income/(loss) per share ​ $ (0.05) ​ $ 0.02 ​ $ (0.11) ​ $ 0.02 ​ Diluted net income/(loss) per share ​ $ (0.05) ​ $ 0.02 ​ $ (0.11) ​ $ 0.02 ​
Schedule of Anti-Dilutive Securities Excluded from Computation of Net Income/(Loss) Per Share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2020 2019 ​ 2020 ​ 2019 Warrants to purchase common stock ​ ​ 1,125 ​ ​ — ​ ​ 1,125 ​ ​ — ​ Options to purchase common stock ​ ​ 12,751 ​ ​ 579 ​ ​ 12,751 ​ ​ 579 ​ Restricted stock units ("RSUs") ​ ​ 5,889 ​ ​ 8 ​ ​ 5,889 ​ ​ 8 ​ Performance stock options ("PSOs") ​ ​ 2,800 ​ ​ 3,382 ​ ​ 2,800 ​ ​ 3,382 ​ Performance stock units ("PSUs") ​ ​ — ​ ​ 2,972 ​ ​ — ​ ​ 2,972 ​ Employee stock purchase plan ("ESPP") ​ ​ 358 ​ ​ — ​ ​ 358 ​ ​ — ​ Total ​ ​ 22,923 ​ ​ 6,941 ​ ​ 22,923 ​ ​ 6,941 ​

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	6 Months Ended
	Jun. 30, 2020
Revenue from Contracts with Customers
Summary of Revenue from Contracts with Customers	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ ​ 2020 ​ 2019 ​ 2020 ​ 2019 ​ In-App Purchases (over-time revenue recognition) ​ $ 116,907 ​ $ 82,659 ​ $ 212,846 ​ $ 166,203 ​ Advertisements and offers (point-in-time revenue recognition) ​ 16,374 ​ 12,864 ​ ​ 27,703 ​ 25,194 ​ Other (point-in-time revenue recognition) ​ ​ 35 ​ ​ 17 ​ ​ 41 ​ ​ 28 ​ Total revenue ​ $ 133,316 ​ $ 95,540 ​ $ 240,590 ​ $ 191,425 ​
Information on Receivables, contract assets and contract liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 Receivables, which are included in accounts receivable, net $ 64,658 ​ $ 29,304 Contract liabilities, which are included in deferred revenue 145,498 ​ 97,629

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2020
Fair Value Measurements
Schedule of Assets and Liabilities Presented at Fair Value	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 June 30, 2020 Financial Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 283,057 ​ $ — ​ $ — ​ $ 283,057 ​ Other investments ​ ​ — ​ ​ — ​ ​ 1,565 ​ ​ 1,565 ​ Total financial assets ​ $ 283,057 ​ $ — ​ $ 1,565 ​ $ 284,622 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Level 1 Level 2 Level 3 December 31, 2019 Financial Assets ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Cash and cash equivalents ​ $ 127,053 ​ $ — ​ $ — ​ $ 127,053 Other investments ​ ​ — ​ ​ — ​ ​ 1,565 ​ ​ 1,565 Total financial assets ​ $ 127,053 ​ $ — ​ $ 1,565 ​ $ 128,618

Balance Sheet Components (Table

Balance Sheet Components (Tables)	6 Months Ended
	Jun. 30, 2020
Balance Sheet Components
Schedule of Components of Accounts Receivable, net	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, December 31, ​ 2020 2019 Accounts receivable ​ $ 64,658 ​ $ 29,304 ​ Less: Allowance for doubtful accounts ​ — ​ — ​ Accounts receivable, net ​ $ 64,658 ​ $ 29,304 ​

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets
Schedule of Carrying Amounts and Accumulated Amortization of Acquired Intangible Assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, 2020 ​ December 31, 2019 ​ Estimated Gross Accumulated Net Gross Accumulated Net ​ ​ Useful ​ Carrying ​ Amortization ​ Carrying ​ Carrying ​ Amortization ​ Carrying ​ ​ Life ​ Value ​ Expense ​ Value ​ Value ​ Expense ​ Value Intangible assets amortized to cost of revenue: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Titles, content and technology 3 - 5 yrs ​ $ 21,117 ​ $ (18,134) ​ $ 2,983 ​ $ 21,117 ​ $ (16,359) ​ $ 4,758 ​ Customer contracts and related relationships 5 yrs ​ 700 ​ ​ (700) ​ ​ — ​ 700 ​ ​ (700) ​ ​ — ​ Trademarks 7 yrs ​ 5,000 ​ ​ (5,000) ​ ​ — ​ 5,000 ​ ​ (5,000) ​ ​ — ​ ​ ​ ​ ​ $ 26,817 ​ $ (23,834) ​ $ 2,983 ​ $ 26,817 ​ $ (22,059) ​ $ 4,758 ​
Schedule of Expected Amortization Related to Intangible Assets	​ ​ ​ ​ ​ ​ Amortization ​ ​ to Be Included in ​ ​ Cost of Year Ending December 31, Revenue 2020 (remaining 6 months) ​ $ 1,483 2021 ​ 1,500 Total intangible assets ​ $ 2,983

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2020
Leases
Schedule of future minimum lease payments	​ ​ ​ ​ ​ ​ ​ Operating Year Ending December 31, Leases 2020 (remaining 6 months) ​ 3,422 2021 ​ 7,104 2022 ​ ​ 7,015 2023 ​ ​ 6,980 2024 and thereafter ​ ​ 27,667 Total lease payments ​ $ 52,188 Less: imputed interest ​ ​ (10,877) Total ​ $ 41,311
Supplemental Information Operating Cash Flows from Operating Leases	​ ​ ​ ​ ​ ​ June 30, 2020 ​ Weighted average remaining lease term ​ 7.06 yrs Weighted average discount rate ​ 6.7 % ​ ​ ​ ​ ​ ​ ​ ​ Six Months Ended ​ June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: ​ ​ ​ Operating cash outflow from operating leases ​ $ 1,320 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ June 30, 2020 June 30, 2020 Right of use assets obtained in exchange for new lease obligations: ​ ​ ​ ​ ​ Operating leases ​ $ 73 $ 407

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2020
Commitments and Contingencies
Schedule of Future Minimum Guaranteed Royalty Commitments	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Future ​ ​ Minimum ​ ​ Guarantee Year Ending December 31, Commitments 2020 (remaining 6 months) ​ $ 2,660 2021 ​ 10,829 2022 ​ ​ 6,855 2023 ​ ​ 6,690 2024 ​ ​ 6,150 ​ ​ $ 33,184

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2020
Stockholders' Equity
Schedule of Warrants Outstanding	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Number ​ Weighted ​ ​ ​ ​ ​ of Shares ​ Average ​ ​ ​ ​ ​ Outstanding ​ Exercise ​ Average ​ ​ ​ Under ​ Price per ​ Contractual ​ ​ ​ Warrant Share Term (Years) Warrants outstanding, December 31, 2019 ​ 1,600 ​ $ 4.61 ​ 5.44 ​ Exercised ​ (475) ​ $ 4.99 ​ 5.00 ​ Warrants outstanding, June 30, 2020 ​ 1,125 ​ $ 4.46 ​ 5.44 ​

Stock Incentive Plans (Tables)

Stock Incentive Plans (Tables)	6 Months Ended
	Jun. 30, 2020
Summary of Stock Option Activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options Outstanding ​ ​ ​ ​ ​ ​ ​ Weighted Weighted ​ ​ ​ ​ Number ​ Average ​ Average Remaining ​ Aggregate ​ ​ of ​ Exercise ​ Contractual ​ Intrinsic ​ ​ Shares ​ Price ​ Term (Years) ​ Value Balances at December 31, 2019 16,288 $ 3.56 ​ ​ ​ ​ ​ Options granted 210 ​ $ 9.00 ​ ​ ​ ​ ​ ​ Options canceled (287) ​ $ 5.35 ​ ​ ​ ​ ​ ​ Options exercised (3,460) ​ $ 3.36 ​ ​ ​ ​ ​ ​ Balances at June 30, 2020 12,751 ​ $ 3.66 6.98 ​ $ 71,487 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Options exercisable at June 30, 2020 8,619 ​ $ 3.28 6.71 ​ $ 51,668 ​
Schedule of Assumptions Used to Estimate Fair Value of Options	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Stock Options ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ 2020 ​ 2019 ​ 2020 ​ 2019 Dividend yield — % — % — % — % Risk-free interest rate 0.28 % 2.07 % 0.28 % 2.15 % Expected volatility 69.3 % 56.1 % 69.3 % 56.1 % Expected term (years) 4.00 ​ 4.00 ​ 4.00 ​ 4.00 ​
Schedule of Stock-Based Compensation Expense by Line Item	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2020 2019 ​ 2020 2019 ​ Research and development ​ $ 5,298 ​ $ 1,128 ​ $ 9,260 ​ $ 5,074 ​ Sales and marketing ​ 1,013 ​ 55 ​ 1,888 ​ 881 ​ General and administrative ​ 1,795 ​ 852 ​ 3,340 ​ 2,887 ​ Total stock-based compensation expense ​ $ 8,106 ​ $ 2,035 ​ $ 14,488 ​ $ 8,842 ​ (1) For the three and six months ended June 30, 2020, stock-based compensation expense recorded in research and development includes $486 and $630 from PSUs classified as liabilities. (2) Stock-based compensation expense for the three and six months ended June 30, 2019 included a reversal of previously accrued expense of $2,526 due to a decrease in the vesting probability of certain performance-based equity awards.
Schedule of compensation expense related to unvested awards	The following table summarizes total compensation expense related to unvested awards not yet recognized as of June 30, 2020: ​ ​ ​ ​ ​ ​ Unrecognized Compensation ​ ​ Expense for Unvested ​ ​ Awards Stock options ​ $ 8,276 RSUs ​ ​ 33,063 PSUs ​ ​ 7,048 PSOs ​ ​ 638 Total unrecognized compensation expense ​ $ 49,025 (1) The unrecognized compensation expense for PSUs classified as equity and vesting in fiscal years 2022 and 2023, except for PSUs classified as liabilities, is excluded in the table above as the Company does not have a reasonable basis upon which to estimate the vesting probability of such awards in those future periods.
Restricted stock units ("RSUs")
Summary of Company's Performance-based Awards	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Number of ​ Average ​ Average Remaining ​ ​ Aggregate ​ ​ Units ​ Grant Date ​ Contractual ​ ​ Intrinsic ​ Outstanding Fair Value ​ Term (Years) ​ ​ Value Awarded and unvested, December 31, 2019 3,951 ​ $ 5.66 ​ ​ ​ ​ ​ Granted 3,013 ​ $ 6.40 ​ ​ ​ ​ ​ Vested (885) ​ $ 4.88 ​ ​ ​ ​ ​ Forfeited (190) ​ $ 5.78 ​ ​ ​ ​ ​ Awarded and unvested, June 30, 2020 5,889 ​ $ 6.15 ​ 1.73 ​ $ 54,592
Performance stock units ("PSUs")
Summary of Company's Performance-based Awards	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Number of ​ Average ​ Average Remaining ​ ​ Aggregate ​ ​ Units ​ Grant Date ​ Contractual ​ ​ Intrinsic ​ Outstanding Fair Value ​ Term (Years) ​ ​ Value Awarded and unvested, December 31, 2019 ​ 5,417 ​ $ 6.06 ​ ​ ​ ​ ​ Vested ​ (276) ​ $ 3.61 ​ ​ ​ ​ ​ Forfeited ​ (1,370) ​ $ 6.85 ​ ​ ​ ​ ​ Awarded and unvested, June 30, 2020 ​ 3,771 ​ $ 5.95 ​ 1.24 ​ $ 34,953 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ PSUs expected to vest at June 30, 2020 ​ 1,625 ​ $ 5.56 ​ 0.63 ​ $ 15,068
Performance stock options ("PSOs")
Summary of Stock Option Activity	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Weighted ​ Weighted ​ ​ ​ ​ ​ Number of ​ Average ​ Average Remaining ​ ​ Aggregate ​ ​ Shares ​ Exercise ​ Contractual ​ ​ Intrinsic ​ Outstanding Price ​ Term (Years) ​ ​ Value Balance as of December 31, 2019 ​ 6,583 ​ $ 4.54 ​ ​ ​ ​ ​ Canceled ​ (1,377) ​ $ 6.18 ​ ​ ​ ​ ​ Exercised ​ (948) ​ $ 3.61 ​ ​ ​ ​ ​ Balance as of June 30, 2020 ​ 4,258 ​ $ 4.21 ​ 7.53 ​ $ 21,531 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ PSOs expected to vest at June 30, 2020 ​ 526 ​ $ 3.60 ​ 7.35 ​ $ 2,984 PSOs exercisable at June 30, 2020 ​ 2,800 ​ $ 3.59 ​ 7.30 ​ $ 15,892

Segment Information and Opera_2

Segment Information and Operations by Geographic Area (Tables)	6 Months Ended
	Jun. 30, 2020
Segment Information and Operations by Geographic Area
Schedule of Revenues by Geographic Region	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three Months Ended ​ Six Months Ended ​ ​ ​ June 30, ​ June 30, ​ ​ 2020 2019 ​ 2020 2019 ​ United States of America ​ $ 104,377 ​ $ 73,835 ​ $ 188,385 ​ $ 146,703 ​ Americas, excluding the United States ​ 7,827 ​ 5,979 ​ 14,447 ​ 12,197 ​ EMEA ​ 14,715 ​ 10,902 ​ 26,573 ​ 22,430 ​ APAC ​ 6,397 ​ 4,824 ​ 11,185 ​ 10,095 ​ Total revenue ​ $ 133,316 ​ $ 95,540 ​ $ 240,590 ​ $ 191,425 ​
Schedule of Long-Lived Assets by Geographic Location	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ June 30, December 31, ​ 2020 2019 United States of America ​ $ 16,812 ​ $ 16,738 ​ Rest of the World ​ 967 ​ 905 ​ Total ​ $ 17,779 ​ $ 17,643 ​

The Company, Basis of Present_4

The Company, Basis of Presentation and Summary of Significant Accounting Policies - Concentration Risks (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Revenues from customers | Apple
Concentration Risk [Line Items]
Concentration risk percentage from customers	55.5	52.6	56.4	52.8
Revenues from customers | Google
Concentration Risk [Line Items]
Concentration risk percentage from customers	32.7	34.6	32.3	34.4
Accounts Receivable | Customer Concentration Risk | Apple
Concentration Risk [Line Items]
Concentration risk percentage from customers			66.1		47.2
Accounts Receivable | Customer Concentration Risk | Google
Concentration Risk [Line Items]
Concentration risk percentage from customers			20.4		28.5
Accounts Receivable | Customer Concentration Risk | Tapjoy
Concentration Risk [Line Items]
Concentration risk percentage from customers					17.8

Net Income_(Loss) Per Share - B

Net Income/(Loss) Per Share - Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share, Basic and Diluted [Abstract]
Net income/(loss)	$ (8,566)	$ (8,273)	$ 2,507	$ 663	$ (16,839)	$ 3,170
Shares used to compute net income/(loss) per share:
Weighted average shares used to compute basic net income/(loss) per share	156,583		145,451		153,106	144,951
Dilutive potential common shares			14,231			14,605
Weighted average shares used to compute diluted net income/(loss) per share	156,583		159,682		153,106	159,556
Basic net income/(loss) per share	$ (0.05)		$ 0.02		$ (0.11)	$ 0.02
Diluted net income/(loss) per share	$ (0.05)		$ 0.02		$ (0.11)	$ 0.02

Net Income_(Loss) Per Share - A

Net Income/(Loss) Per Share - Antidilutive Shares (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share	22,923	6,941	22,923	6,941
Warrants to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share	1,125		1,125
Options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share	12,751	579	12,751	579
Restricted stock units ("RSUs")
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share	5,889	8	5,889	8
Performance stock options ("PSOs")
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share	2,800	3,382	2,800	3,382
Performance stock units ("PSUs")
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share		2,972		2,972
Employee stock purchase plan ("ESPP")
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti dilutive securities excluded from computation of diluted net loss per share	358		358

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Total Revenue	$ 133,316	$ 95,540	$ 240,590	$ 191,425
Micro-Transactions | Over-time revenue recognition
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	116,907	82,659	212,846	166,203
Advertisements and offers | Point-in-time revenue recognition
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	16,374	12,864	27,703	25,194
Other | Point-in-time revenue recognition
Disaggregation of Revenue [Line Items]
Revenue from contracts with customers	$ 35	$ 17	$ 41	$ 28

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Contract Balances (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Contract Balances
Receivables, which are included in accounts receivable, net	$ 64,658	$ 29,304
Contract assets	0	0
Contract liabilities, which are included in deferred revenue	$ 145,498	$ 97,629	$ 85,736

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contracts with Customers
Deferred revenue	$ 145,498		$ 145,498		$ 97,629	$ 85,736
Deferred revenue earned	$ 24,604	$ 21,914	$ 96,371	$ 84,612

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gains or losses from events or changes in circumstances that affect the fair value of investments	$ 0	$ 0
Cash and cash equivalents	283,057	127,053
Other Investments	1,565	1,565
Total financial assets	284,622	128,618
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	283,057	127,053
Total financial assets	283,057	127,053
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Investments	1,565	1,565
Total financial assets	$ 1,565	$ 1,565

Balance Sheet Components - Acco

Balance Sheet Components - Accounts Receivable (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Balance Sheet Components
Accounts receivable	$ 64,658,000		$ 64,658,000		$ 29,304,000
Accounts receivable, net	64,658,000		64,658,000		$ 29,304,000
Bad debts	$ 0	$ 0	$ 0	$ 0

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets
Gross Carrying Value	$ 26,817	$ 26,817
Accumulated Amortization Expense	(23,834)	(22,059)
Total intangible assets	2,983	4,758
Titles, content and technology
Finite-Lived Intangible Assets
Gross Carrying Value	21,117	21,117
Accumulated Amortization Expense	(18,134)	(16,359)
Total intangible assets	$ 2,983	4,758
Titles, content and technology | Minimum
Finite-Lived Intangible Assets
Estimated Useful Life	3 years
Titles, content and technology | Maximum
Finite-Lived Intangible Assets
Estimated Useful Life	5 years
Customer contracts and related relationships
Finite-Lived Intangible Assets
Estimated Useful Life	5 years
Gross Carrying Value	$ 700	700
Accumulated Amortization Expense	$ (700)	(700)
Trademarks
Finite-Lived Intangible Assets
Estimated Useful Life	7 years
Gross Carrying Value	$ 5,000	5,000
Accumulated Amortization Expense	$ (5,000)	$ (5,000)

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Future Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Cost of Goods and Services Sold, Depreciation and Amortization [Abstract]
Amortization expense, cost of revenues	$ 887	$ 1,056	$ 1,775	$ 2,308
Amortization of intangible assets	887	$ 1,056	1,775	$ 2,308
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2020 (remaining 6 months)	1,483		1,483
2021	1,500		1,500
Total intangible assets	2,983		2,983
Goodwill	$ 116,227		$ 116,227		$ 116,227

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Lease terms
Lessee, Operating Lease, Existence of Option to Extend [true false]			false
Longest extension option	6 years		6 years
Rent expense	$ 1,712	$ 653	$ 2,883	$ 2,004
ROU asset adjustment	$ 73		$ 407
Minimum
Lease terms
Operating leases, remaining lease terms			5 months
Maximum
Lease terms
Operating leases, remaining lease terms			7 years 5 months 1 day

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments under Noncancelable Leases (Details) $ in Thousands	Jun. 30, 2020USD ($)
Leases
2020 (remaining 6 months)	$ 3,422
2021	7,104
2022	7,015
2023	6,980
2024 and thereafter	27,667
Total lease payments	52,188
Less imputed interest	(10,877)
Total	$ 41,311

Leases - Supplemental Informati

Leases - Supplemental Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2020USD ($)
Leases
Weighted-average remaining non-cancelable lease term	7 years 21 days	7 years 21 days
Weighted-average discount rate	6.70%	6.70%
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflow from operating leases		$ 1,320
Right of use assets obtained in exchange for new lease obligations:
Operating leases	$ 73	$ 407

Commitments and Contingencies -

Commitments and Contingencies - Minimum Guaranteed Royalties (Details) $ in Thousands	Jun. 30, 2020USD ($)
Future unpaid minimum guaranteed royalty commitments
2020 (remaining 6 months)	$ 2,660
2021	10,829
2022	6,855
2023	6,690
2024	6,150
Total future unpaid minimum guaranteed royalty commitments	$ 33,184

Commitments and Contingencies_2

Commitments and Contingencies - Other Commitments (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Indemnification Agreement | Digital Storefronts
Indemnification Agreements [Abstract]
Indemnification liability recorded	$ 0	$ 0
Current and long-term liabilities | Agreements With Various Licensors
Other agreements with commitments
Other Commitment	$ 31,238

Stockholders' Equity - Warrants

Stockholders' Equity - Warrants to Purchase Common Stock (Details) - Warrants to purchase common stock - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Number of Shares Outstanding Under Warrants
Warrants outstanding, beginning balance			$ 1,600
Number of Shares Outstanding Under Warrant, Exercised			(475)
Warrants outstanding, ending balance	$ 1,125		$ 1,125		$ 1,600
Weighted Average Exercise Price Per Share
Weighted average exercise price, beginning balance			$ 4.61
Weighted average exercise price, Exercised			4.99
Weighted average exercise price, ending balance	$ 4.46		$ 4.46		$ 4.61
Average Contractual Term (Years)
Warrants outstanding, Average Contractual term (Years)			5 years 5 months 8 days		5 years 5 months 8 days
Average contractual term, Exercised			5 years
Recognized expense with respect to warrants	$ 0	$ 0	$ 0	$ 0

Stockholders' Equity - Follow-o

Stockholders' Equity - Follow-on Public Offering (Details) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended
	Jun. 30, 2020USD ($)$ / sharesshares
Follow-on Public Offering
Subsidiary, Sale of Stock [Line Items]
Shares issued | shares	17,250
Offering price per share | $ / shares	$ 9.25
Aggregate gross proceeds | $	$ 159,563
Net proceeds after underwriting fees and offering expenses | $	$ 151,773
Follow-on Public Offering, over-allotment option
Subsidiary, Sale of Stock [Line Items]
Shares issued | shares	2,250

Stock Incentive Plans (Details)

Stock Incentive Plans (Details) - shares shares in Thousands	1 Months Ended	6 Months Ended
	Apr. 30, 2017	Jun. 30, 2020	Apr. 30, 2020	Apr. 30, 2018
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term		6 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term		10 years
Performance stock options ("PSOs")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contractual term		10 years
Sixth Amendment 2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, reserved for future issuance			7,000
2007 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for issuance, increased	4,000
2018 Equity Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, reserved for future issuance				400

Stock Incentive Plans - RSU and

Stock Incentive Plans - RSU and PSU Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2020USD ($)$ / sharesshares
Restricted stock units ("RSUs")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awarded and unvested, Number of Units Outstanding, beginning balance | shares	3,951
Granted, Number of Units Outstanding | shares	3,013
Vested, Number of Units Outstanding | shares	(885)
Forfeited, Number of Units Outstanding | shares	(190)
Awarded and unvested, Number of Units Outstanding, ending balance | shares	5,889
Awarded and unvested, Weighted Average Grant Date Fair Value, beginning balance | $ / shares	$ 5.66
Granted, Weighted Average Grant Date Fair Value | $ / shares	6.40
Vested, Weighted Average Grant Date Fair Value | $ / shares	4.88
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	5.78
Awarded and unvested, Weighted Average Grant Date Fair Value, ending balance | $ / shares	$ 6.15
Awarded and unvested, Weighted Average Remaining Contractual Term (Years)	1 year 8 months 23 days
Exercisable, Aggregate Intrinsic Value | $	$ 54,592
Performance stock units ("PSUs")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awarded and unvested, Number of Units Outstanding, beginning balance | shares	5,417
Vested, Number of Units Outstanding | shares	(276)
Forfeited, Number of Units Outstanding | shares	(1,370)
Awarded and unvested, Number of Units Outstanding, ending balance | shares	3,771
Expected to vest, Number of Units Outstanding | shares	1,625
Awarded and unvested, Weighted Average Grant Date Fair Value, beginning balance | $ / shares	$ 6.06
Vested, Weighted Average Grant Date Fair Value | $ / shares	3.61
Forfeited, Weighted Average Grant Date Fair Value | $ / shares	6.85
Awarded and unvested, Weighted Average Grant Date Fair Value, ending balance | $ / shares	5.95
Expected to vest, Weighted Average Grant Date Fair Value | $ / shares	$ 5.56
Awarded and unvested, Weighted Average Remaining Contractual Term (Years)	1 year 2 months 26 days
Expected to vest, Weighted Average Remaining Contractual Term (Years)	7 months 17 days
Aggregate Intrinsic Value | $	$ 34,953
Expected to vest, Aggregate Intrinsic Value | $	$ 15,068

Stock Incentive Plans - PSO and

Stock Incentive Plans - PSO and Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2020
Performance stock options ("PSOs")
Number of Shares Outstanding, beginning balances	6,583
Number of Shares Outstanding, Canceled	(1,377)
Number of Shares Outstanding, Exercised	(948)
Number of Shares Outstanding, ending balances	4,258
Number of Shares Outstanding, expected to vest	526
Number of Shares Outstanding, exercisable	2,800
Weighted Average Exercise Price, beginning balance	$ 4.54
Weighted Average Exercise Price, Canceled	6.18
Weighted Average Exercise Price, Exercised	3.61
Weighted Average Exercise Price, ending balance	4.21
Weighted Average Exercise Price, expected to vest	3.60
Weighted Average Exercise Price, exercisable	$ 3.59
Weighted Average Remaining Contractual Term, ending balance	7 years 6 months 10 days
Weighted Average Remaining Contractual Term, expected to vest	7 years 4 months 6 days
Weighted Average Remaining Contractual Term, exercisable	7 years 3 months 18 days
Aggregate Intrinsic Value, ending balance	$ 21,531
Aggregate Intrinsic Value, expected to vest	2,984
Aggregate Intrinsic Value, exercisable	$ 15,892
Stock Options
Number of Shares Outstanding, beginning balances	16,288
Options granted, number of shares	210
Number of Shares Outstanding, Canceled	(287)
Number of Shares Outstanding, Exercised	(3,460)
Number of Shares Outstanding, ending balances	12,751
Number of Shares Outstanding, exercisable	8,619
Weighted Average Exercise Price, beginning balance	$ 3.56
Options granted, weighted average exercise price	9
Weighted Average Exercise Price, Canceled	5.35
Weighted Average Exercise Price, Exercised	3.36
Weighted Average Exercise Price, ending balance	3.66
Weighted Average Exercise Price, exercisable	$ 3.28
Weighted Average Remaining Contractual Term, ending balance	6 years 11 months 23 days
Weighted Average Remaining Contractual Term, exercisable	6 years 8 months 15 days
Aggregate Intrinsic Value, ending balance	$ 71,487
Aggregate Intrinsic Value, exercisable	$ 51,668

Stock Incentive Plans - Weighte

Stock Incentive Plans - Weighted Average Assumptions (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Black-Sholes Valuation Assumptions
Expected term (years)		4 years
Stock Based Compensation Additional Details
Weighted-average fair value of stock options granted	$ 4.63	$ 3.88	$ 4.63	$ 3.94
Minimum
Stock Based Compensation Additional Details
Contractual term			6 years
Maximum
Stock Based Compensation Additional Details
Contractual term			10 years
Performance stock options ("PSOs")
Stock Based Compensation Additional Details
Contractual term			10 years
Options to purchase common stock
Black-Sholes Valuation Assumptions
Risk-free interest rate	0.28%	2.07%	0.28%	2.15%
Expected volatility	69.30%	56.10%	69.30%	56.10%
Expected term (years)	4 years		4 years	4 years

Stock Incentive Plans - Stock-B

Stock Incentive Plans - Stock-Based Compensation Expense (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 8,106	$ 2,035	$ 14,488	$ 8,842
Reversal of stock based compensation expense		2,526		2,526
Total compensation expense related to unvested awards not yet recognized	$ 49,025		$ 49,025
Unrecognized compensation expense recognized over weighted average period			1 year 5 months 19 days
Quoted closing price of Company's common stock	$ 9.27		$ 9.27
Cash proceed from option exercise, net			$ 14,873	860
25% of Shares
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting period			1 year
Research and development
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ 5,298	1,128	$ 9,260	5,074
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	1,013	55	1,888	881
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	1,795	$ 852	3,340	$ 2,887
Options to purchase common stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total compensation expense related to unvested awards not yet recognized	8,276		$ 8,276
Restricted stock units ("RSUs")
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting period			4 years
Vesting percentage on or around the one-year anniversary			25.00%
Total compensation expense related to unvested awards not yet recognized	33,063		$ 33,063
Unrecognized compensation expense recognized over weighted average period			3 years 3 months 18 days
Performance stock options ("PSOs")
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total compensation expense related to unvested awards not yet recognized	638		$ 638
Performance stock options ("PSOs") | Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Unrecognized compensation expense recognized over weighted average period			7 months 17 days
Performance stock units ("PSUs")
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	486		$ 630
Total compensation expense related to unvested awards not yet recognized	$ 7,048		$ 7,048

Income Taxes - (Details)

Income Taxes - (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Income Taxes
Income tax (benefit) expense	$ (6,187)	$ 0	$ (7,508)	$ 178
Unrecognized tax benefits	$ 16,440		$ 16,440		$ 15,084

Segment Information and Opera_3

Segment Information and Operations by Geographic Area - Revenue (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)segment	Jun. 30, 2019USD ($)
Long-lived assets (primarily consist of property and equipment)
Number of Operating Segments | segment			1
Revenues	$ 133,316	$ 95,540	$ 240,590	$ 191,425
United States of America
Long-lived assets (primarily consist of property and equipment)
Revenues	104,377	73,835	188,385	146,703
Americas, excluding the United States
Long-lived assets (primarily consist of property and equipment)
Revenues	7,827	5,979	14,447	12,197
EMEA
Long-lived assets (primarily consist of property and equipment)
Revenues	14,715	10,902	26,573	22,430
APAC
Long-lived assets (primarily consist of property and equipment)
Revenues	$ 6,397	$ 4,824	$ 11,185	$ 10,095

Segment Information and Opera_4

Segment Information and Operations by Geographic Area - Long-Lived Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Long-lived assets (primarily consist of property and equipment)
Long-Lived Assets	$ 17,779	$ 17,643
United States of America
Long-lived assets (primarily consist of property and equipment)
Long-Lived Assets	16,812	16,738
Rest of the World
Long-lived assets (primarily consist of property and equipment)
Long-Lived Assets	$ 967	$ 905